Pruning machine

Abstract

The invention discloses a pruning machine, the left side of the motor assembly (5) has a steel wire flexible shaft (7), a vertical rod (12), a switch top block (13), a main button (2), a seesaw (8) and The micro switch (6); the right side of the motor assembly (5) has a pull plate (10) and the auxiliary button (4); the two ends of the flexible steel wire shaft (7) are connected with the right end of the main button (2) and the rocker (8) respectively. The left end is connected; a rigid metal rod (9) is connected between the right end of the rocker (8) and the upper end of the pull plate (10); the lower end of the pull plate (10) and the auxiliary button (3) are hinged on the casing (11) at the same time; The plate (8) is slidably sleeved on the vertical rod (12) with the switch top block (13); the micro switch (6) is located above the switch top block (13). The invention has the advantages that not only the motor can be turned on and off with only a small force, but also the thermal deformation of the transmission parts due to the heating of the motor can be prevented.

Description

Technical field: [0001] The present invention relates to a pruning machine for pruning or trimming branches, shrubs or hedges and the like. Background technique: [0002] For safety considerations, most of the prior art pruning machines need both hands to operate simultaneously to start the machine, that is, the main and auxiliary buttons must be linked to move the micro switch in the casing to start the pruning machine. The utility model patent of the safety control mechanism of the pruning machine authorized by the applicant on June 30, 2004 has disclosed a kind of front and rear handles with steel wire flexible shafts (also known as steel cable flexible shafts). The structure of the pruning machine with transmission joint control machine, which includes a micro switch installed in the main handle to control whether the pruning machine motor works or not, a main button hinged under the main handle, and a button hinged at one end of the auxiliary handle. The auxiliary butt...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the pruning machine that uses the flexible wire shaft to realize the linkage of the main and auxiliary buttons has the following two shortcomings in practical application: 1. The flexible wire shaft is a transmission part that can be bent in any direction to bypass various obstacles , in the pruning machine, although the flexible steel wire shaft can use its own bending characteristics to go around various parts in the pruning machine to realize the linkage of the main and auxiliary buttons, however, due to the large bending resistance of the flexible steel wire shaft (especially in the case of corrosion Afterwards, its bending resistance is greater), and the force arm of the lever that is in contact with or separated from the micro switch is far away from the force of the secondary button, so that the user must use a large force to open and close the machine, which brings a lot of trouble to the operation. 2. The motor in the pruning machine will have a normal heating phenomenon during long-term work. When the temperature is too high, it will cause the wire flexible shaft transmission parts and The plastic parts connected by the flexible steel wire shaft are deformed by force and heat, which affects their normal transmission function, which eventually hinders the normal opening and closing of the pruning machine and reduces the reliability of the pruning machine.

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